Interaction of X-rays with matter

Who discovered X-rays in 1895 and was awarded the first Nobel prize in Physics in 1901?

• Wilhelm C. Röntgen

• W. H. Bragg

• Harry Moseley

• Charles G. Barkla

What is the name of the phenomenon where a fraction of the energy of a photon is transferred into the kinetic energy of an electron?

• Auger electron emission

• Thomson scattering

• X-ray fluorescence

• Compton scattering

What is the name of the facility that provides a very brilliant X-ray source, with intensity ranging from 10^7 to 10^12 times that of an X-ray tube?

• Rotating anodes

• X-ray tube

• Synchrotron radiation facility

• Bremsstrahlung spectrum

Above which energy range is Compton scattering getting similarly important as photoelectric absorption ?

• 10 keV

• 100 eV

• 100 keV

• 10^4 keV

Order the cross sections for the interaction of X-rays with matter from the smallest to largest cross section contribution around 1 eV - 10 keV.

• Photoelectric absorption

• Nuclear interaction

• Compton scattering

• Thomson scattering

What is the relation between the X-ray attenuation length Λ and the linear absorption coefficient μ ?

• Λ = 12.398 / μ

• μ = 1 / Λ

• μ = 2π / Λ

• μ = 1 - δ + i Λ

Which of the photon energy dependent function(s) displays (a) characteristic edge jump(s) ?

• β in refractive index n = 1 - δ + i β

• attenuation length Λ

• linear absorption coefficient μ

• dispersion term of atomic form factor f''

• absorption cross section σ_a